gpu: nvgpu: Implement priv pages

Implement support for privileged pages. Use them for kernel allocated buffers.

Change-Id: I720fc441008077b8e2ed218a7a685b8aab2258f0
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/761919

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index ee99c821..3af35b26 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -221,7 +221,7 @@ struct gk20a_mmu_level {
                            u64 *iova,
                            u32 kind_v, u32 *ctag,
                            bool cacheable, bool unmapped_pte,
-                           int rw_flag, bool sparse, u32 flags);
+                           int rw_flag, bool sparse, bool priv);
         size_t entry_size;
 };
 
@@ -441,7 +441,8 @@ u64 gk20a_gmmu_map(struct vm_gk20a *vm,
                 struct sg_table **sgt,
                 u64 size,
                 u32 flags,
-                int rw_flag);
+                int rw_flag,
+                bool priv);
 
 int gk20a_gmmu_alloc_map(struct vm_gk20a *vm,
                 size_t size,
@@ -498,6 +499,7 @@ u64 gk20a_locked_gmmu_map(struct vm_gk20a *vm,
                         int rw_flag,
                         bool clear_ctags,
                         bool sparse,
+                        bool priv,
                         struct vm_gk20a_mapping_batch *batch);
 
 void gk20a_gmmu_unmap(struct vm_gk20a *vm,